10am-7pm: Rob Heard’s ex­hi­bi­tion Shrouds of the Somme at the Olympic Park, Strat­ford, east Lon­don Fea­tures 72,396 small fig­ures, rep­re­sent­ing every Com­mon­wealth ser­vice­man who died in the Bat­tle of the Somme and whose bod­ies were never found.